Earthquake with magnitude of ML 1.2 on date 22-08-2015 and time 03:44:32 (Italy) in region 3 km E Mirabella Imbaccari (CT)

A magnitude ML 1.2 earthquake occured in region: 3 km E Mirabella Imbaccari (CT), on

  • 22-08-2015 01:44:32 (UTC)
  • 22-08-2015 03:44:32 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 37.3380, 14.4810 at 32 km depth.

The earthquake was located by: Sala Sismica INGV-Roma.

Search earthquakes: Any within 30 km radius

The values of hypocentral coordinates and magnitude may be revised at a later time as more information becomes available.

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Mirabella Imbaccari CT 3 4912 4912
San Michele di Ganzaria CT 8 3245 8157
Aidone EN 9 4889 13046
Caltagirone CT 11 38686 51732
San Cono CT 11 2697 54429
Piazza Armerina EN 11 21886 76315
Raddusa CT 16 3178 79493
Grammichele CT 19 13418 92911
Valguarnera Caropepe EN 20 7866 100777
Ramacca CT 20 10894 111671

Municipalities with at least 50000 inhabitants

An earthquake occurred to
36 Km NE of Gela (75827 inhabitants)
41 Km E of Caltanissetta (63360 inhabitants)
44 Km N of Vittoria (63339 inhabitants)
51 Km NW of Ragusa (73313 inhabitants)
57 Km W of Catania (314555 inhabitants)
59 Km NW of Modica (54633 inhabitants)
68 Km W of Acireale (52622 inhabitants)
78 Km W of Siracusa (122291 inhabitants)
79 Km E of Agrigento (59770 inhabitants)
Recent and historical seismicity
Seismic hazard
Shakemap
Felt maps
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Reviewed
Rev100
ML 1.2 2015-08-22
01:44:32
37.338 14.4812 32 2015-08-22
01:48:56
Sala Sismica INGV-Roma 21010331
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2015-08-22 01:44:32 ± 0.24
Latitude 37.3380 ± 0.0126
Longitude 14.4812 ± 0.0079
Depth (km) 32 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 21010331

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1430
Semi-minor axis of confidence ellipse (meter) 267
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 166
Circular confidence region, given by single value of horizontal uncertainty (meter) 1430.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 229
Number of associated phases, regardless of their use for origin computation 10
Number of defining phases 10
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.18
Epicentral distance of station closest to the epicenter (degree) 0.14929
Epicentral distance of station farthest from the epicenter (degree) 0.63492
Number of stations at which the event was observed 5
Number of stations from which data was used for origin computation 5
Magnitude information

ML:1.2

Field Value
Value 1.2
Uncertainty 0.0
Num. used stations 1
Type of magnitude ML
Reference to an origin 21010331
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2015-08-22 01:48:56
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.HAVL.HHZ. 2015-08-22T01:44:54.52 0.6 undecidable manual S 126 70.4739 109 -0.09 45
IV.SSY.HHZ. 2015-08-22T01:44:51.38 0.3 undecidable manual S 111 55.9995 114 0.37 67
IV.HAGA.HHZ. 2015-08-22T01:44:51.71 0.3 undecidable manual S 95 59.6958 113 -0.21 67
IV.HLNI.HHZ. 2015-08-22T01:44:45.95 0.3 undecidable manual S 88 34.4433 128 -0.12 73
IV.HAVL.HHZ. 2015-08-22T01:44:45.23 0.6 undecidable manual P 126 70.4739 109 0.02 46
IV.SSY.HHZ. 2015-08-22T01:44:43.34 0.1 undecidable manual P 111 55.9995 114 0.2 92
IV.HAGA.HHZ. 2015-08-22T01:44:43.73 0.1 undecidable manual P 95 59.6958 113 0.07 94
IV.RAFF.HHZ. 2015-08-22T01:44:42.85 0.3 undecidable manual S 219 16.5723 150 -0.04 75
IV.HLNI.HHZ. 2015-08-22T01:44:40.29 0.1 undecidable manual P 88 34.4433 128 0 99
IV.RAFF.HHZ. 2015-08-22T01:44:38.28 0.1 undecidable manual P 219 16.5723 150 -0.17 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.RAFF.HHE. ML:1.2 0.0000639 0.28 AML other m 2015-08-22T01:44:43.12
IV.RAFF.HHN. ML:1.2 0.00006815 0.22 AML other m 2015-08-22T01:44:43.09
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download